[yummyfajitas]

If you will not acknowledge that this course of action could well increase the class divide, or that widening said divide is bad for everyone, there's not much to be done.

Could you justify this claim? Or is this simply an axiom of yours?

(As an aside, why again is it undesirable to simply help them get running water and schools in their own countries?)

It's not. It's just not as cost effective. Building running water in India is not under our control, nor is it free. Allowing people to live and work in the US has a negative cost - we benefit from their labor, and they benefit from our consistent water supply.

I think those benefits outweigh any liberal angst created by increased inequality (within US borders) and decreased global inequality.